How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Robert Your Own Question
Robert, BMW Technician
Category: BMW
Satisfied Customers: 4716
Experience:  Fully qualified 19+yrs exp/self employed technician in the UK
Type Your BMW Question Here...
Robert is online now

I have a 520i it keeps over heating even though the temp/gauge

This answer was rated:

I have a 520i it keeps over heating even though the temp/gauge is on the half way mark. If you stand facing the engine there is a large black hose from engine to radiator and at that join there is a lot of steam coming out ??? could this be the thurmostate ?



Hopefully i can help..


The top coolant hose from the engine to top port on the radiator comes from the thermostat housing on the front of the engine..if you follow it back you'll see the housing..if there is steam coming from the joint or joints where it connects too either at the radiator/or to the thermostat housing then check the hose for splits or damage at the plastic connections..i recall too a small bleeder screw on the hose so check that too is tight..dont over tight just check its not shouldnt have any sort of steam from any coolant pipe if you do then it means there is leak there..and needs to be dealt with wither that be removing the hose and inspect or to replace..if thats the case then it might be beneficial to whilst that hose is getting replaced to change out the thermostat anyway and re- add the proper 50/50 mix coolant/water and rebleed the system again and see how that goes..I do hope this helps..if you need to ask anything else or include anything further then just continue before you rate

Robert and other BMW Specialists are ready to help you

Hi..there... Thats fine..and many thanks for your rating..


I have closed you other request should you need to ask anything else then just continue on this single question only after this of luck Robert